This week's roundup of new Mac apps includes Moom, a tool for making your app windows the perfect size (and keeping them that way).

This week’s roundup of new Mac apps includes Moom, a tool for making your app windows the perfect size (and keeping them that way). Plus, apps for making gorgeous photo collages, tracking the moon’s patterns, and more. Read on!

The app allows you to completely customize type elements like fonts, backgrounds, margins, and much more. It also supports interactive content and videos, and can be used in full-screen mode. As an added bonus, it lets you export your content—including any comment or bookmark you may have added—into a convenient PDF.

Many Tricks’ $10 Moom (Mac App Store Link) allows you to resize your windows at will using your mouse or keyboard.

Moom adds a convenient pop-up menu right by your window’s zoom button, from where you can reposition and resize according to several different configurations. It lets you specify different settings for multiple screens, and saves your layouts between reboots.

ZipZapMac’s $20 Periscope Pro (Mac App Store Link) gives you remote access to your Mac’s camera—an ideal way to monitor your home whenever you are out and about.

The app can either record a continuous feed, or use motion detection technology to only capture video when something happens within the camera’s field of view. The recordings can be saved to a local hard drive or synchronized to your Dropbox account.

The app includes a variety of background images that you can use to spice up your photos, offers a full set of layout and framing tools to customize your collages, and can save its output in one of several common image formats.

Time Sink generates graphs that show when and how often you use each app, can be set up to automatically group similar software into categories like “Internet browsing,” and is even capable of exporting the data it generates into a spreadsheet for further analysis.

Todoist features a gamification system that helps you stay on track by giving you points when you achieve your goals; integrates with Google Drive, Cloud Magic, and other popular cloud systems; and lets you share your projects and lists with friends and family via email or over the web.

The app allows you to quickly look up word definitions, and helps you practice your language skills with fun quizzes and word puzzles. You can also update its database by adding new words, and it synchronizes everything across multiple devices through iCloud.